Commit | Line | Data |
---|---|---|
ce3c775b | 1 | /* Plugin support for BFD. |
250d07de | 2 | Copyright (C) 2009-2021 Free Software Foundation, Inc. |
ce3c775b NC |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
19 | MA 02110-1301, USA. */ | |
20 | ||
691bf19c | 21 | #include "sysdep.h" |
98950613 AM |
22 | #include "bfd.h" |
23 | ||
24 | #if BFD_SUPPORTS_PLUGINS | |
25 | ||
ce3c775b | 26 | #include <assert.h> |
17d5dae2 | 27 | #ifdef HAVE_DLFCN_H |
ce3c775b | 28 | #include <dlfcn.h> |
17d5dae2 KT |
29 | #elif defined (HAVE_WINDOWS_H) |
30 | #include <windows.h> | |
31 | #else | |
32 | #error Unknown how to handle dynamic-load-libraries. | |
33 | #endif | |
ce3c775b NC |
34 | #include <stdarg.h> |
35 | #include "plugin-api.h" | |
ce3c775b NC |
36 | #include "plugin.h" |
37 | #include "libbfd.h" | |
38 | #include "libiberty.h" | |
39 | #include <dirent.h> | |
40 | ||
17d5dae2 KT |
41 | #if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) |
42 | ||
43 | #define RTLD_NOW 0 /* Dummy value. */ | |
44 | ||
45 | static void * | |
46 | dlopen (const char *file, int mode ATTRIBUTE_UNUSED) | |
47 | { | |
48 | return LoadLibrary (file); | |
49 | } | |
50 | ||
51 | static void * | |
52 | dlsym (void *handle, const char *name) | |
53 | { | |
54 | return GetProcAddress (handle, name); | |
55 | } | |
56 | ||
57 | static int ATTRIBUTE_UNUSED | |
58 | dlclose (void *handle) | |
59 | { | |
60 | FreeLibrary (handle); | |
61 | return 0; | |
62 | } | |
63 | ||
64 | static const char * | |
65 | dlerror (void) | |
66 | { | |
67 | return "Unable to load DLL."; | |
68 | } | |
69 | ||
70 | #endif /* !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) */ | |
71 | ||
3d98c460 | 72 | #define bfd_plugin_close_and_cleanup _bfd_generic_close_and_cleanup |
07d6d2b8 AM |
73 | #define bfd_plugin_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
74 | #define bfd_plugin_new_section_hook _bfd_generic_new_section_hook | |
75 | #define bfd_plugin_get_section_contents _bfd_generic_get_section_contents | |
ce3c775b | 76 | #define bfd_plugin_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
07d6d2b8 AM |
77 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
78 | #define bfd_plugin_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data | |
79 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data | |
80 | #define bfd_plugin_bfd_set_private_flags _bfd_generic_bfd_set_private_flags | |
ce3c775b | 81 | #define bfd_plugin_core_file_matches_executable_p generic_core_file_matches_executable_p |
07d6d2b8 | 82 | #define bfd_plugin_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
d00dd7dc | 83 | #define bfd_plugin_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false |
07d6d2b8 AM |
84 | #define bfd_plugin_get_lineno _bfd_nosymbols_get_lineno |
85 | #define bfd_plugin_find_nearest_line _bfd_nosymbols_find_nearest_line | |
86 | #define bfd_plugin_find_line _bfd_nosymbols_find_line | |
87 | #define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info | |
60bb06bc | 88 | #define bfd_plugin_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string |
07d6d2b8 AM |
89 | #define bfd_plugin_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
90 | #define bfd_plugin_read_minisymbols _bfd_generic_read_minisymbols | |
91 | #define bfd_plugin_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
92 | #define bfd_plugin_set_arch_mach bfd_default_set_arch_mach | |
93 | #define bfd_plugin_set_section_contents _bfd_generic_set_section_contents | |
ce3c775b | 94 | #define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
07d6d2b8 AM |
95 | #define bfd_plugin_bfd_relax_section bfd_generic_relax_section |
96 | #define bfd_plugin_bfd_link_hash_table_create _bfd_generic_link_hash_table_create | |
97 | #define bfd_plugin_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
98 | #define bfd_plugin_bfd_link_just_syms _bfd_generic_link_just_syms | |
99 | #define bfd_plugin_bfd_final_link _bfd_generic_final_link | |
100 | #define bfd_plugin_bfd_link_split_section _bfd_generic_link_split_section | |
101 | #define bfd_plugin_bfd_gc_sections bfd_generic_gc_sections | |
102 | #define bfd_plugin_bfd_lookup_section_flags bfd_generic_lookup_section_flags | |
103 | #define bfd_plugin_bfd_merge_sections bfd_generic_merge_sections | |
104 | #define bfd_plugin_bfd_is_group_section bfd_generic_is_group_section | |
cb7f4b29 | 105 | #define bfd_plugin_bfd_group_name bfd_generic_group_name |
07d6d2b8 AM |
106 | #define bfd_plugin_bfd_discard_group bfd_generic_discard_group |
107 | #define bfd_plugin_section_already_linked _bfd_generic_section_already_linked | |
108 | #define bfd_plugin_bfd_define_common_symbol bfd_generic_define_common_symbol | |
34a87bb0 | 109 | #define bfd_plugin_bfd_link_hide_symbol _bfd_generic_link_hide_symbol |
07d6d2b8 | 110 | #define bfd_plugin_bfd_define_start_stop bfd_generic_define_start_stop |
69a630b5 | 111 | #define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type |
07d6d2b8 | 112 | #define bfd_plugin_bfd_link_check_relocs _bfd_generic_link_check_relocs |
ce3c775b NC |
113 | |
114 | static enum ld_plugin_status | |
115 | message (int level ATTRIBUTE_UNUSED, | |
116 | const char * format, ...) | |
117 | { | |
118 | va_list args; | |
119 | va_start (args, format); | |
120 | printf ("bfd plugin: "); | |
121 | vprintf (format, args); | |
d9b21463 | 122 | putchar ('\n'); |
ce3c775b NC |
123 | va_end (args); |
124 | return LDPS_OK; | |
125 | } | |
126 | ||
0aa99dcd L |
127 | struct plugin_list_entry |
128 | { | |
129 | /* These must be initialized for each IR object with LTO wrapper. */ | |
0aa99dcd L |
130 | ld_plugin_claim_file_handler claim_file; |
131 | ld_plugin_all_symbols_read_handler all_symbols_read; | |
132 | ld_plugin_all_symbols_read_handler cleanup_handler; | |
0a1b45a2 | 133 | bool has_symbol_type; |
0aa99dcd L |
134 | |
135 | struct plugin_list_entry *next; | |
136 | ||
137 | /* These can be reused for all IR objects. */ | |
138 | const char *plugin_name; | |
0aa99dcd L |
139 | }; |
140 | ||
ecda9016 | 141 | static const char *plugin_program_name; |
ecda9016 L |
142 | |
143 | void | |
3d98c460 | 144 | bfd_plugin_set_program_name (const char *program_name) |
ecda9016 L |
145 | { |
146 | plugin_program_name = program_name; | |
0aa99dcd L |
147 | } |
148 | ||
149 | static struct plugin_list_entry *plugin_list = NULL; | |
150 | static struct plugin_list_entry *current_plugin = NULL; | |
151 | ||
ce3c775b | 152 | /* Register a claim-file handler. */ |
ce3c775b NC |
153 | |
154 | static enum ld_plugin_status | |
155 | register_claim_file (ld_plugin_claim_file_handler handler) | |
156 | { | |
0aa99dcd L |
157 | current_plugin->claim_file = handler; |
158 | return LDPS_OK; | |
159 | } | |
160 | ||
ce3c775b NC |
161 | static enum ld_plugin_status |
162 | add_symbols (void * handle, | |
163 | int nsyms, | |
164 | const struct ld_plugin_symbol * syms) | |
165 | { | |
166 | bfd *abfd = handle; | |
167 | struct plugin_data_struct *plugin_data = | |
5bb3703f | 168 | bfd_alloc (abfd, sizeof (plugin_data_struct)); |
ce3c775b | 169 | |
3d98c460 L |
170 | if (!plugin_data) |
171 | return LDPS_ERR; | |
0aa99dcd | 172 | |
3d98c460 L |
173 | plugin_data->nsyms = nsyms; |
174 | plugin_data->syms = syms; | |
ce3c775b NC |
175 | |
176 | if (nsyms != 0) | |
177 | abfd->flags |= HAS_SYMS; | |
178 | ||
3d98c460 | 179 | abfd->tdata.plugin_data = plugin_data; |
ce3c775b NC |
180 | return LDPS_OK; |
181 | } | |
182 | ||
c3a1714c L |
183 | static enum ld_plugin_status |
184 | add_symbols_v2 (void *handle, int nsyms, | |
185 | const struct ld_plugin_symbol *syms) | |
186 | { | |
0a1b45a2 | 187 | current_plugin->has_symbol_type = true; |
c3a1714c L |
188 | return add_symbols (handle, nsyms, syms); |
189 | } | |
190 | ||
7d0b9ebc AM |
191 | int |
192 | bfd_plugin_open_input (bfd *ibfd, struct ld_plugin_input_file *file) | |
ce3c775b | 193 | { |
e44f5bef MT |
194 | bfd *iobfd; |
195 | ||
7d0b9ebc | 196 | iobfd = ibfd; |
27b07675 AM |
197 | while (iobfd->my_archive |
198 | && !bfd_is_thin_archive (iobfd->my_archive)) | |
199 | iobfd = iobfd->my_archive; | |
765cf5f6 | 200 | file->name = bfd_get_filename (iobfd); |
e44f5bef MT |
201 | |
202 | if (!iobfd->iostream && !bfd_open_file (iobfd)) | |
203 | return 0; | |
204 | ||
27b07675 AM |
205 | /* The plugin API expects that the file descriptor won't be closed |
206 | and reused as done by the bfd file cache. So open it again. | |
207 | dup isn't good enough. plugin IO uses lseek/read while BFD uses | |
208 | fseek/fread. It isn't wise to mix the unistd and stdio calls on | |
209 | the same underlying file descriptor. */ | |
210 | file->fd = open (file->name, O_RDONLY | O_BINARY); | |
211 | if (file->fd < 0) | |
212 | return 0; | |
e44f5bef | 213 | |
7d0b9ebc | 214 | if (iobfd == ibfd) |
e44f5bef MT |
215 | { |
216 | struct stat stat_buf; | |
103da91b | 217 | |
7d0b9ebc | 218 | if (fstat (file->fd, &stat_buf)) |
103da91b NC |
219 | { |
220 | close(file->fd); | |
221 | return 0; | |
222 | } | |
223 | ||
7d0b9ebc AM |
224 | file->offset = 0; |
225 | file->filesize = stat_buf.st_size; | |
226 | } | |
227 | else | |
228 | { | |
229 | file->offset = ibfd->origin; | |
230 | file->filesize = arelt_size (ibfd); | |
e44f5bef | 231 | } |
7d0b9ebc AM |
232 | return 1; |
233 | } | |
234 | ||
235 | static int | |
236 | try_claim (bfd *abfd) | |
237 | { | |
238 | int claimed = 0; | |
239 | struct ld_plugin_input_file file; | |
e44f5bef | 240 | |
27b07675 | 241 | file.handle = abfd; |
22fe7df8 L |
242 | if (bfd_plugin_open_input (abfd, &file) |
243 | && current_plugin->claim_file) | |
0aa99dcd L |
244 | { |
245 | current_plugin->claim_file (&file, &claimed); | |
22fe7df8 | 246 | close (file.fd); |
0aa99dcd | 247 | } |
22fe7df8 | 248 | |
7d0b9ebc | 249 | return claimed; |
e44f5bef MT |
250 | } |
251 | ||
0a1b45a2 AM |
252 | static bool |
253 | try_load_plugin (const char *pname, | |
254 | struct plugin_list_entry *plugin_list_iter, | |
255 | bfd *abfd, | |
256 | bool build_list_p) | |
e44f5bef | 257 | { |
dcf06b89 | 258 | void *plugin_handle; |
3d98c460 | 259 | struct ld_plugin_tv tv[5]; |
ce3c775b NC |
260 | int i; |
261 | ld_plugin_onload onload; | |
262 | enum ld_plugin_status status; | |
0a1b45a2 | 263 | bool result = false; |
5ae0078c | 264 | |
22fe7df8 L |
265 | /* NB: Each object is independent. Reuse the previous plugin from |
266 | the last run will lead to wrong result. */ | |
267 | if (current_plugin) | |
dcf06b89 L |
268 | memset (current_plugin, 0, |
269 | offsetof (struct plugin_list_entry, next)); | |
0aa99dcd | 270 | |
99845b3b L |
271 | if (plugin_list_iter) |
272 | pname = plugin_list_iter->plugin_name; | |
273 | ||
ce3c775b NC |
274 | plugin_handle = dlopen (pname, RTLD_NOW); |
275 | if (!plugin_handle) | |
276 | { | |
13aa5ceb NC |
277 | /* If we are building a list of viable plugins, then |
278 | we do not bother the user with the details of any | |
279 | plugins that cannot be loaded. */ | |
280 | if (! build_list_p) | |
281 | _bfd_error_handler ("Failed to load plugin '%s', reason: %s\n", | |
282 | pname, dlerror ()); | |
0a1b45a2 | 283 | return false; |
ce3c775b NC |
284 | } |
285 | ||
22fe7df8 | 286 | if (plugin_list_iter == NULL) |
b0ceb98a | 287 | { |
22fe7df8 L |
288 | size_t length_plugin_name = strlen (pname) + 1; |
289 | char *plugin_name = bfd_malloc (length_plugin_name); | |
13aa5ceb | 290 | |
22fe7df8 | 291 | if (plugin_name == NULL) |
dcf06b89 | 292 | goto short_circuit; |
22fe7df8 L |
293 | plugin_list_iter = bfd_malloc (sizeof *plugin_list_iter); |
294 | if (plugin_list_iter == NULL) | |
4b24dd1a | 295 | { |
22fe7df8 | 296 | free (plugin_name); |
dcf06b89 | 297 | goto short_circuit; |
4b24dd1a | 298 | } |
22fe7df8 L |
299 | /* Make a copy of PNAME since PNAME from load_plugin () will be |
300 | freed. */ | |
301 | memcpy (plugin_name, pname, length_plugin_name); | |
302 | memset (plugin_list_iter, 0, sizeof (*plugin_list_iter)); | |
303 | plugin_list_iter->plugin_name = plugin_name; | |
304 | plugin_list_iter->next = plugin_list; | |
305 | plugin_list = plugin_list_iter; | |
b0ceb98a Z |
306 | } |
307 | ||
dcf06b89 | 308 | current_plugin = plugin_list_iter; |
99845b3b | 309 | if (build_list_p) |
dcf06b89 | 310 | goto short_circuit; |
0aa99dcd | 311 | |
ce3c775b NC |
312 | onload = dlsym (plugin_handle, "onload"); |
313 | if (!onload) | |
dcf06b89 | 314 | goto short_circuit; |
ce3c775b NC |
315 | |
316 | i = 0; | |
317 | tv[i].tv_tag = LDPT_MESSAGE; | |
318 | tv[i].tv_u.tv_message = message; | |
319 | ||
320 | ++i; | |
321 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; | |
322 | tv[i].tv_u.tv_register_claim_file = register_claim_file; | |
323 | ||
324 | ++i; | |
325 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; | |
326 | tv[i].tv_u.tv_add_symbols = add_symbols; | |
327 | ||
c3a1714c L |
328 | ++i; |
329 | tv[i].tv_tag = LDPT_ADD_SYMBOLS_V2; | |
330 | tv[i].tv_u.tv_add_symbols = add_symbols_v2; | |
331 | ||
ce3c775b NC |
332 | ++i; |
333 | tv[i].tv_tag = LDPT_NULL; | |
334 | tv[i].tv_u.tv_val = 0; | |
335 | ||
0aa99dcd | 336 | /* LTO plugin will call handler hooks to set up plugin handlers. */ |
ce3c775b NC |
337 | status = (*onload)(tv); |
338 | ||
339 | if (status != LDPS_OK) | |
dcf06b89 | 340 | goto short_circuit; |
b0ceb98a | 341 | |
5ae0078c L |
342 | abfd->plugin_format = bfd_plugin_no; |
343 | ||
0aa99dcd | 344 | if (!current_plugin->claim_file) |
dcf06b89 | 345 | goto short_circuit; |
ce3c775b | 346 | |
e44f5bef | 347 | if (!try_claim (abfd)) |
dcf06b89 | 348 | goto short_circuit; |
e44f5bef | 349 | |
5ae0078c | 350 | abfd->plugin_format = bfd_plugin_yes; |
0a1b45a2 | 351 | result = true; |
dcf06b89 | 352 | |
dc1e8a47 | 353 | short_circuit: |
dcf06b89 L |
354 | dlclose (plugin_handle); |
355 | return result; | |
ce3c775b NC |
356 | } |
357 | ||
5ae0078c | 358 | /* There may be plugin libraries in lib/bfd-plugins. */ |
99845b3b | 359 | static int has_plugin_list = -1; |
5ae0078c | 360 | |
cb001c0d | 361 | static bfd_cleanup (*ld_plugin_object_p) (bfd *); |
5ae0078c | 362 | |
ce3c775b NC |
363 | static const char *plugin_name; |
364 | ||
365 | void | |
366 | bfd_plugin_set_plugin (const char *p) | |
367 | { | |
368 | plugin_name = p; | |
5ae0078c L |
369 | } |
370 | ||
371 | /* Return TRUE if a plugin library is used. */ | |
372 | ||
0a1b45a2 | 373 | bool |
5ae0078c L |
374 | bfd_plugin_specified_p (void) |
375 | { | |
99845b3b | 376 | return plugin_list != NULL; |
5ae0078c L |
377 | } |
378 | ||
7dc3990e L |
379 | /* Return TRUE if ABFD can be claimed by linker LTO plugin. */ |
380 | ||
0a1b45a2 | 381 | bool |
7dc3990e L |
382 | bfd_link_plugin_object_p (bfd *abfd) |
383 | { | |
384 | if (ld_plugin_object_p) | |
385 | return ld_plugin_object_p (abfd) != NULL; | |
0a1b45a2 | 386 | return false; |
7dc3990e L |
387 | } |
388 | ||
5ae0078c L |
389 | extern const bfd_target plugin_vec; |
390 | ||
391 | /* Return TRUE if TARGET is a pointer to plugin_vec. */ | |
392 | ||
0a1b45a2 | 393 | bool |
5ae0078c L |
394 | bfd_plugin_target_p (const bfd_target *target) |
395 | { | |
396 | return target == &plugin_vec; | |
397 | } | |
398 | ||
399 | /* Register OBJECT_P to be used by bfd_plugin_object_p. */ | |
400 | ||
401 | void | |
cb001c0d | 402 | register_ld_plugin_object_p (bfd_cleanup (*object_p) (bfd *)) |
5ae0078c L |
403 | { |
404 | ld_plugin_object_p = object_p; | |
ce3c775b NC |
405 | } |
406 | ||
99845b3b L |
407 | static void |
408 | build_plugin_list (bfd *abfd) | |
ce3c775b | 409 | { |
41f37a6f AM |
410 | /* The intent was to search ${libdir}/bfd-plugins for plugins, but |
411 | unfortunately the original implementation wasn't precisely that | |
412 | when configuring binutils using --libdir. Search in the proper | |
413 | path first, then the old one for backwards compatibility. */ | |
414 | static const char *path[] | |
415 | = { LIBDIR "/bfd-plugins", BINDIR "/../lib/bfd-plugins" }; | |
416 | struct stat last_st; | |
41f37a6f | 417 | unsigned int i; |
ce3c775b | 418 | |
99845b3b L |
419 | if (has_plugin_list >= 0) |
420 | return; | |
ce3c775b | 421 | |
41f37a6f AM |
422 | /* Try not to search the same dir twice, by looking at st_dev and |
423 | st_ino for the dir. If we are on a file system that always sets | |
424 | st_ino to zero or the actual st_ino is zero we might waste some | |
425 | time, but that doesn't matter too much. */ | |
426 | last_st.st_dev = 0; | |
427 | last_st.st_ino = 0; | |
428 | for (i = 0; i < sizeof (path) / sizeof (path[0]); i++) | |
ce3c775b | 429 | { |
41f37a6f AM |
430 | char *plugin_dir = make_relative_prefix (plugin_program_name, |
431 | BINDIR, | |
432 | path[i]); | |
433 | if (plugin_dir) | |
434 | { | |
435 | struct stat st; | |
436 | DIR *d; | |
437 | ||
438 | if (stat (plugin_dir, &st) == 0 | |
439 | && S_ISDIR (st.st_mode) | |
440 | && !(last_st.st_dev == st.st_dev | |
441 | && last_st.st_ino == st.st_ino | |
442 | && st.st_ino != 0) | |
443 | && (d = opendir (plugin_dir)) != NULL) | |
444 | { | |
445 | struct dirent *ent; | |
446 | ||
447 | last_st.st_dev = st.st_dev; | |
448 | last_st.st_ino = st.st_ino; | |
449 | while ((ent = readdir (d)) != NULL) | |
450 | { | |
451 | char *full_name; | |
452 | ||
453 | full_name = concat (plugin_dir, "/", ent->d_name, NULL); | |
454 | if (stat (full_name, &st) == 0 && S_ISREG (st.st_mode)) | |
0a1b45a2 | 455 | (void) try_load_plugin (full_name, NULL, abfd, true); |
41f37a6f | 456 | free (full_name); |
41f37a6f AM |
457 | } |
458 | closedir (d); | |
459 | } | |
460 | free (plugin_dir); | |
461 | } | |
ce3c775b NC |
462 | } |
463 | ||
99845b3b L |
464 | has_plugin_list = plugin_list != NULL; |
465 | } | |
466 | ||
0a1b45a2 | 467 | static bool |
99845b3b L |
468 | load_plugin (bfd *abfd) |
469 | { | |
470 | struct plugin_list_entry *plugin_list_iter; | |
471 | ||
472 | if (plugin_name) | |
0a1b45a2 | 473 | return try_load_plugin (plugin_name, plugin_list, abfd, false); |
99845b3b L |
474 | |
475 | if (plugin_program_name == NULL) | |
0a1b45a2 | 476 | return false; |
99845b3b L |
477 | |
478 | build_plugin_list (abfd); | |
479 | ||
480 | for (plugin_list_iter = plugin_list; | |
481 | plugin_list_iter; | |
482 | plugin_list_iter = plugin_list_iter->next) | |
0a1b45a2 AM |
483 | if (try_load_plugin (NULL, plugin_list_iter, abfd, false)) |
484 | return true; | |
99845b3b | 485 | |
0a1b45a2 | 486 | return false; |
ce3c775b NC |
487 | } |
488 | ||
489 | ||
cb001c0d | 490 | static bfd_cleanup |
ce3c775b NC |
491 | bfd_plugin_object_p (bfd *abfd) |
492 | { | |
5ae0078c L |
493 | if (ld_plugin_object_p) |
494 | return ld_plugin_object_p (abfd); | |
495 | ||
49f30d83 | 496 | if (abfd->plugin_format == bfd_plugin_unknown && !load_plugin (abfd)) |
ce3c775b NC |
497 | return NULL; |
498 | ||
cb001c0d | 499 | return abfd->plugin_format == bfd_plugin_yes ? _bfd_no_cleanup : NULL; |
ce3c775b NC |
500 | } |
501 | ||
502 | /* Copy any private info we understand from the input bfd | |
503 | to the output bfd. */ | |
504 | ||
0a1b45a2 | 505 | static bool |
ce3c775b NC |
506 | bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED, |
507 | bfd *obfd ATTRIBUTE_UNUSED) | |
508 | { | |
509 | BFD_ASSERT (0); | |
0a1b45a2 | 510 | return true; |
ce3c775b NC |
511 | } |
512 | ||
513 | /* Copy any private info we understand from the input section | |
514 | to the output section. */ | |
515 | ||
0a1b45a2 | 516 | static bool |
ce3c775b NC |
517 | bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, |
518 | asection *isection ATTRIBUTE_UNUSED, | |
519 | bfd *obfd ATTRIBUTE_UNUSED, | |
520 | asection *osection ATTRIBUTE_UNUSED) | |
521 | { | |
522 | BFD_ASSERT (0); | |
0a1b45a2 | 523 | return true; |
ce3c775b NC |
524 | } |
525 | ||
526 | /* Copy any private info we understand from the input symbol | |
527 | to the output symbol. */ | |
528 | ||
0a1b45a2 | 529 | static bool |
ce3c775b NC |
530 | bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, |
531 | asymbol *isymbol ATTRIBUTE_UNUSED, | |
532 | bfd *obfd ATTRIBUTE_UNUSED, | |
533 | asymbol *osymbol ATTRIBUTE_UNUSED) | |
534 | { | |
535 | BFD_ASSERT (0); | |
0a1b45a2 | 536 | return true; |
ce3c775b NC |
537 | } |
538 | ||
0a1b45a2 | 539 | static bool |
ce3c775b NC |
540 | bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED) |
541 | { | |
542 | BFD_ASSERT (0); | |
0a1b45a2 | 543 | return true; |
ce3c775b NC |
544 | } |
545 | ||
546 | static char * | |
547 | bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) | |
548 | { | |
549 | BFD_ASSERT (0); | |
550 | return NULL; | |
551 | } | |
552 | ||
553 | static int | |
554 | bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) | |
261b8d08 PA |
555 | { |
556 | BFD_ASSERT (0); | |
557 | return 0; | |
558 | } | |
559 | ||
560 | static int | |
561 | bfd_plugin_core_file_pid (bfd *abfd ATTRIBUTE_UNUSED) | |
ce3c775b NC |
562 | { |
563 | BFD_ASSERT (0); | |
564 | return 0; | |
565 | } | |
566 | ||
567 | static long | |
568 | bfd_plugin_get_symtab_upper_bound (bfd *abfd) | |
569 | { | |
570 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; | |
571 | long nsyms = plugin_data->nsyms; | |
572 | ||
573 | BFD_ASSERT (nsyms >= 0); | |
574 | ||
575 | return ((nsyms + 1) * sizeof (asymbol *)); | |
576 | } | |
577 | ||
578 | static flagword | |
579 | convert_flags (const struct ld_plugin_symbol *sym) | |
580 | { | |
581 | switch (sym->def) | |
68ffbac6 | 582 | { |
ce3c775b NC |
583 | case LDPK_DEF: |
584 | case LDPK_COMMON: | |
585 | case LDPK_UNDEF: | |
586 | return BSF_GLOBAL; | |
587 | ||
588 | case LDPK_WEAKUNDEF: | |
589 | case LDPK_WEAKDEF: | |
590 | return BSF_GLOBAL | BSF_WEAK; | |
591 | ||
592 | default: | |
593 | BFD_ASSERT (0); | |
594 | return 0; | |
595 | } | |
596 | } | |
597 | ||
598 | static long | |
599 | bfd_plugin_canonicalize_symtab (bfd *abfd, | |
600 | asymbol **alocation) | |
601 | { | |
602 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; | |
603 | long nsyms = plugin_data->nsyms; | |
604 | const struct ld_plugin_symbol *syms = plugin_data->syms; | |
c3a1714c L |
605 | static asection fake_text_section |
606 | = BFD_FAKE_SECTION (fake_text_section, NULL, "plug", 0, | |
a288c270 | 607 | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS); |
c3a1714c L |
608 | static asection fake_data_section |
609 | = BFD_FAKE_SECTION (fake_data_section, NULL, "plug", 0, | |
610 | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS); | |
611 | static asection fake_bss_section | |
612 | = BFD_FAKE_SECTION (fake_bss_section, NULL, "plug", 0, | |
613 | SEC_ALLOC); | |
a288c270 AM |
614 | static asection fake_common_section |
615 | = BFD_FAKE_SECTION (fake_common_section, NULL, "plug", 0, SEC_IS_COMMON); | |
3d98c460 | 616 | int i; |
ce3c775b | 617 | |
ce3c775b NC |
618 | for (i = 0; i < nsyms; i++) |
619 | { | |
68ffbac6 | 620 | asymbol *s = bfd_alloc (abfd, sizeof (asymbol)); |
ce3c775b NC |
621 | |
622 | BFD_ASSERT (s); | |
623 | alocation[i] = s; | |
624 | ||
625 | s->the_bfd = abfd; | |
626 | s->name = syms[i].name; | |
627 | s->value = 0; | |
628 | s->flags = convert_flags (&syms[i]); | |
629 | switch (syms[i].def) | |
630 | { | |
631 | case LDPK_COMMON: | |
632 | s->section = &fake_common_section; | |
633 | break; | |
634 | case LDPK_UNDEF: | |
635 | case LDPK_WEAKUNDEF: | |
636 | s->section = bfd_und_section_ptr; | |
637 | break; | |
638 | case LDPK_DEF: | |
639 | case LDPK_WEAKDEF: | |
c3a1714c L |
640 | if (current_plugin->has_symbol_type) |
641 | switch (syms[i].symbol_type) | |
642 | { | |
b5ffa918 NC |
643 | default: |
644 | /* FIXME: Should we issue an error here ? */ | |
c3a1714c L |
645 | case LDST_UNKNOWN: |
646 | /* What is the best fake section for LDST_UNKNOWN? */ | |
647 | case LDST_FUNCTION: | |
648 | s->section = &fake_text_section; | |
649 | break; | |
650 | case LDST_VARIABLE: | |
651 | if (syms[i].section_kind == LDSSK_BSS) | |
652 | s->section = &fake_bss_section; | |
653 | else | |
654 | s->section = &fake_data_section; | |
655 | break; | |
656 | } | |
657 | else | |
3d98c460 | 658 | s->section = &fake_text_section; |
ce3c775b NC |
659 | break; |
660 | default: | |
661 | BFD_ASSERT (0); | |
662 | } | |
663 | ||
664 | s->udata.p = (void *) &syms[i]; | |
665 | } | |
666 | ||
667 | return nsyms; | |
668 | } | |
669 | ||
670 | static void | |
671 | bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED, | |
672 | PTR afile ATTRIBUTE_UNUSED, | |
673 | asymbol *symbol ATTRIBUTE_UNUSED, | |
674 | bfd_print_symbol_type how ATTRIBUTE_UNUSED) | |
675 | { | |
676 | BFD_ASSERT (0); | |
677 | } | |
678 | ||
679 | static void | |
680 | bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, | |
681 | asymbol *symbol, | |
682 | symbol_info *ret) | |
683 | { | |
684 | bfd_symbol_info (symbol, ret); | |
685 | } | |
686 | ||
687 | /* Make an empty symbol. */ | |
688 | ||
689 | static asymbol * | |
690 | bfd_plugin_make_empty_symbol (bfd *abfd) | |
691 | { | |
d3ce72d0 NC |
692 | asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol)); |
693 | if (new_symbol == NULL) | |
694 | return new_symbol; | |
695 | new_symbol->the_bfd = abfd; | |
696 | return new_symbol; | |
ce3c775b NC |
697 | } |
698 | ||
699 | static int | |
700 | bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, | |
701 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
702 | { | |
703 | BFD_ASSERT (0); | |
704 | return 0; | |
705 | } | |
706 | ||
ce3c775b NC |
707 | const bfd_target plugin_vec = |
708 | { | |
709 | "plugin", /* Name. */ | |
710 | bfd_target_unknown_flavour, | |
711 | BFD_ENDIAN_LITTLE, /* Target byte order. */ | |
712 | BFD_ENDIAN_LITTLE, /* Target headers byte order. */ | |
713 | (HAS_RELOC | EXEC_P | /* Object flags. */ | |
714 | HAS_LINENO | HAS_DEBUG | | |
715 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), | |
716 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | |
717 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ | |
718 | 0, /* symbol_leading_char. */ | |
719 | '/', /* ar_pad_char. */ | |
720 | 15, /* ar_max_namelen. */ | |
64bfc258 | 721 | 255, /* match priority. */ |
d1bcae83 | 722 | TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ |
ce3c775b NC |
723 | |
724 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
725 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
726 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
727 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
728 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
729 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
730 | ||
731 | { /* bfd_check_format. */ | |
732 | _bfd_dummy_target, | |
733 | bfd_plugin_object_p, | |
734 | bfd_generic_archive_p, | |
735 | _bfd_dummy_target | |
736 | }, | |
737 | { /* bfd_set_format. */ | |
d00dd7dc AM |
738 | _bfd_bool_bfd_false_error, |
739 | _bfd_bool_bfd_false_error, | |
ce3c775b | 740 | _bfd_generic_mkarchive, |
d00dd7dc | 741 | _bfd_bool_bfd_false_error, |
ce3c775b NC |
742 | }, |
743 | { /* bfd_write_contents. */ | |
d00dd7dc AM |
744 | _bfd_bool_bfd_false_error, |
745 | _bfd_bool_bfd_false_error, | |
ce3c775b | 746 | _bfd_write_archive_contents, |
d00dd7dc | 747 | _bfd_bool_bfd_false_error, |
ce3c775b NC |
748 | }, |
749 | ||
750 | BFD_JUMP_TABLE_GENERIC (bfd_plugin), | |
751 | BFD_JUMP_TABLE_COPY (bfd_plugin), | |
752 | BFD_JUMP_TABLE_CORE (bfd_plugin), | |
e6cc316a L |
753 | #ifdef USE_64_BIT_ARCHIVE |
754 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_64_bit), | |
755 | #else | |
ce3c775b | 756 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
e6cc316a | 757 | #endif |
ce3c775b NC |
758 | BFD_JUMP_TABLE_SYMBOLS (bfd_plugin), |
759 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), | |
760 | BFD_JUMP_TABLE_WRITE (bfd_plugin), | |
761 | BFD_JUMP_TABLE_LINK (bfd_plugin), | |
762 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
763 | ||
764 | NULL, | |
765 | ||
07d6d2b8 | 766 | NULL /* backend_data. */ |
ce3c775b | 767 | }; |
1e927850 | 768 | #endif /* BFD_SUPPORTS_PLUGINS */ |